urban center vs Daugavpils

urban center and Daugavpils both are nouns.

Word	Noun	Adjective	Verb	Adverb
urban center	Yes	No	No	No
Daugavpils	Yes	No	No	No

urban center (noun)	Daugavpils (noun)
a large and densely populated urban area; may include several independent administrative districts	a city of southeastern Latvia